Inspired by T232893, this is something I've always wanted to report. Our coverage reports on doc.wikimedia.org (example) uses a red/green combination that's very hard to discern. As partly colorblind, I can guarantee that:
- The page is hard to read on a decent monitor
- The page is impossible to read on a monitor with not-so-good colors (I tried a cheap laptop, and there really was no difference between the colors)
The colors seem to be decided by a bootstrap CSS file included directly by PHPUnit; hence, I'm going to open an upstream bug report. Nevertheless, I wonder whether we can change the color for our reports, before we will eventually upgrade to a newer version of php-code-coverage.